Dungeons are easy the first time you do them. Occasionally you might meet one that has some spice, but they aren’t that common. The ones that come to mind are OG Stone Vigil, Aurum Vale, The Vault in HW (before it was nerfed), Bardam’s Mettle, and Holminster Switch.
I could count on maybe one hand how many dungeons I’ve wiped on or died in the first time I ran them. I’m certainly not a gaming prodigy. If we’re going to compare anecdotes, mine directly contradicts yours. With the exception of a handful, they are simply facerolls. Especially the “expert” dungeons.I have yet to run a dungeon in this game that I didn't die on my first run through. Maybe you're a gaming prodigy who instinctively understands and responds to every mechanic before you're even aware that it exists, but as far as I'm concerned, the difficulty for dungeons and normal raids seems about right.
Occasionally there will be a normal mode raid that will wipe a party of newcomers, but that’s primarily due to gotcha mechanics. Not inherent difficulty. Same with Alliance raids. Rhalgr wiped alliances of newcomers repeatedly when released. That was mostly because we didn’t know he could summon fists and punch players off the arena. Or people messed up the knock back he does. But none of those mechanics are difficult to understand or execute.
The content is easy enough that you can have 20 deaths and still clear. All you really need is one competent healer and/or a semi-decent tank. A competent healer alone can keep an entire party alive in an 8-man or 24-man because two healers aren’t even needed in there. You technically don’t even need a full 24 people. The day Tower at Paradigm’s Breach launched, I was in a run where 12 players killed the first boss because the first knock back he does blew the majority off the ledge. And instead of waiting for us to pick them up (there were still healers alive), they just immediately returned. The ones that didn’t picked up the bodies that remained and we kept going.I die a lot at first, and then I gradually get to a point where everything is second nature, and then I can queue in a healing role and laugh at the new players as I bring them back up. The fact that the content is easy enough to be cleared despite a few deaths in the group is what enables me to laugh through that experience.